yes i have. quite a few of them. more so since i found out about having Crohns. and now that i'm 65 at least every few years. there is really nothing to fear or worry about them. most gastroenterologists put you to sleep. so you don't feel what's going on. make sure whomever the doctor is informs you of this. also there are scans and blood tests. all depending on what they are looking for or find. just relax and you will be fine. good luck. d